文献类型： 外文期刊

作者： Cao, H ¹ ; Yamamoto, H ¹ ; Kitamoto, Y ¹ ;

作者机构： 1.Shanghai Acad Agr Sci, Edible Fungi Inst, Shanghai, Peoples R China

期刊名称：SCIENCE AND CULTIVATION OF EDIBLE FUNGI, VOLS 1 AND 2

ISSN：

年卷期： 2000 年

页码：

收录情况： SCI

摘要： The involvement of relative nuclear dominance in monokaryotic oidium formation from dikaryotic mycelia in Pholiota nameko was examined. Over 90% of oidium isolates from dikaryotic mycelia were monokaryotic. Although only one parental nuclear type was recovered from an average of about 80% in these isolates, the nuclear selection process in oidium formation seems essentially to produce split nuclear type composition in the oidium products. A hierarchy of relative dominance among the nuclear types of the parental dikaryons in monokaryotic oidium formation was determined. Two hierarchies in nuclear selection between monokaryotic oidium formation and monokaryotic mycelium formation coincided at a level of at least 75%. By analysis of various sexual progenies from parental dikaryotic stocks, it was concluded that the genetic factor(s) affecting the relative dominance of nuclear selection could be recombined. It is assumed that the main gene and other supplemental gene(s) might affect the expression of relative predominance in dikaryotic cells. The results also show that these genetic factor(s) may not be linked with incompatibility factors.